CN207600978U - Half-value layer measuring device - Google Patents
Half-value layer measuring device Download PDFInfo
- Publication number
- CN207600978U CN207600978U CN201721717632.5U CN201721717632U CN207600978U CN 207600978 U CN207600978 U CN 207600978U CN 201721717632 U CN201721717632 U CN 201721717632U CN 207600978 U CN207600978 U CN 207600978U
- Authority
- CN
- China
- Prior art keywords
- measuring device
- diaphragm
- value layer
- layer measuring
- stage body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
The utility model embodiment is related to a kind of half-value layer measuring device, including：Support portion, top are equipped with guide rail, have sliding block on rail；Adjustment portion, including pedestal, telescopic rod, regulation handle and stage body；The bottom surface of pedestal is installed on sliding block so that adjustment portion moves along the rail；The upper surface of telescopic rod connection pedestal and the lower surface of stage body, regulation handle driving telescopic rod compression or stretching, so as to adjust distance between stage body and pedestal；Diaphragm component is placed on stage body, including shield and diaphragm；Wherein, there is spliced eye on shield, the outer edge size and spliced eye of diaphragm match, and diaphragm is inserted into spliced eye；Plate rack is absorbed, is placed on stage body, fixes absorbing sheet by absorbing plate rack so that the center of absorbing sheet and diaphragm aligns.The half-value layer measuring device that the utility model embodiment provides by addition diaphragm component, the influence that the scattering in measurement process radiates is reduced as far as possible, realizes the accurate measurement of half-value layer.
Description
Technical field
The utility model is related to actinometry field more particularly to a kind of half-value layer measuring devices.
Background technology
X ray specification radiation quality depends on the high pressure being added in X-ray tube, the property always filtered and thickness and target
Characteristic, radiation quality is often with half-value layer as a parameter to characterization, X ray half-value layer refers to that X-ray intensity is attenuated to initial value
The required substance thickness of half.Half-value layer usually represents with millimeter aluminium or millimeter copper, the tube voltage and attached as defined in meet
Add under filter condition, half-value layer value, for actual working environment, can have suitable for not as the characterization parameter with reference to radiation quality
The X ray reference radiation matter of same domain.
When measuring half-value layer, need to ensure that radiation field is sufficiently large, to meet the measurement demand of ionisation chamber, but scatter radiation
The accuracy that can be measured half-value layer has larger impact, this just needs a kind of device that can reduce the shadow that scattering radiates as much as possible
It rings.
Utility model content
The purpose of this utility model is to provide a kind of half-value layer measuring device, by addition diaphragm component, by measurement process
In scattering radiation influence reduce as far as possible, realize the accurate measurement of half-value layer, and can easily replace internal diameter size
Different diaphragm, to meet the measurement demand under different ionisation chambers and different measuring conditions.
To achieve the above object, the utility model provides a kind of half-value layer measuring device, including：
Support portion, top are equipped with guide rail, have sliding block on the guide rail；
Adjustment portion, including pedestal, telescopic rod, regulation handle and stage body；The bottom surface of the pedestal is installed on the sliding block,
So that the adjustment portion is moved along the guide rail；The telescopic rod connects the upper surface of the pedestal and the following table of the stage body
Face, the regulation handle drives the telescopic rod compression or stretches, so as to adjust distance between the stage body and the pedestal；
Diaphragm component is placed on the stage body, including shield and diaphragm；Wherein, there is spliced eye on the shield, institute
The outer edge size and the spliced eye for stating diaphragm match, and the diaphragm is inserted into the spliced eye；
Plate rack is absorbed, is placed on the stage body, absorbing sheet is fixed by the absorption plate rack so that the absorbing sheet
It is aligned with the center of the diaphragm.
Preferably, the diaphragm component is made of lead material.
Preferably, the internal diameter of the diaphragm is 30mm, thickness 30mm.
Preferably, the internal diameter of the diaphragm is 50mm, thickness 30mm.
Preferably, the thickness of the shield is 25mm.
Preferably, the half-value layer measuring device further includes fixed lower margin, is threadedly coupled with the support portion, by the branch
Support part is fixed on the table top for placing the half-value layer measuring device.
It is further preferred that screwing in the depth of the support portion by adjusting the fixed lower margin, change the branch
Relative altitude between support part and the table top.
Preferably, the bottom for absorbing plate rack has magnet, and the absorption plate rack is fixed on the stage body.
Preferably, the absorption plate rack has screw；The absorbing sheet is fixed on the absorbing sheet by the screw
On stent.
Preferably, the guide rail is two or more pieces, and guide rail described in two or more pieces is mutually parallel.
The half-value layer measuring device that the utility model embodiment provides, will be in measurement process by addition diaphragm component
The influence of scattering radiation reduces as far as possible, realizes the accurate measurement of half-value layer, and can easily replace internal diameter size difference
Diaphragm, to meet the measurement demand under different ionisation chambers and different measuring appliances.
Description of the drawings
Fig. 1 is the front view of half-value layer measuring device that the utility model embodiment provides；
Fig. 2 is the right view of half-value layer measuring device that the utility model embodiment provides.
Specific embodiment
Below by drawings and examples, the technical solution of the utility model is described in further detail.
A kind of half-value layer measuring device that the utility model embodiment provides, structure such as Fig. 1 and Fig. 2, Fig. 1 are half-value layer
The front view of measuring device, Fig. 2 are the right view of half-value layer measuring device.
With reference to Fig. 1 and Fig. 2, the half-value layer measuring device provided the utility model embodiment illustrates.
The half-value layer measuring device of the utility model includes：Support portion 1, adjustment portion 2, diaphragm component 3 and absorption plate rack
4。
Support portion 1 is placed on table top, and wherein table top can be smooth ground, floor, flat surface etc..
In a preferred embodiment, half-value layer measuring device further includes fixed lower margin 5, fixed lower margin 5 and 1 screw thread of support portion
Connection, support portion 1 is fixed on table top.The depth degree in support portion 1 is screwed in by adjusting fixed lower margin 5, thus it is possible to vary
Relative altitude between support portion 1 and table top.
Guide rail (not shown) is equipped at the top of support portion 1, there is sliding block on guide rail, in a preferred embodiment,
The guide rail being mutually parallel equipped with two or more pieces.
As depicted in figs. 1 and 2, adjustment portion 2 includes pedestal 21, telescopic rod 22, regulation handle 23 and stage body 24.
The bottom surface of pedestal 21 is installed on the sliding block of guide rail so that adjustment portion 2 can move along the rail, and change adjustment portion 2
The position of horizontal direction on support portion 1.
In a specific example, support portion 1 is equipped with 2 parallel guide rails, is the first guide rail respectively, second leads
Rail.Adjustment portion 2 being installed on the sliding block of the first guide rail and the second guide rail, adjustment portion 2 can be moved along guide rail direction, so as to
Change position on front-rear direction in Fig. 1.
Telescopic rod 22 connects the upper surface of pedestal 21 and the lower surface of stage body 24, rotates regulation handle 23, can drive and stretch
Contracting bar 22 is compressed or is stretched, so as to adjust the distance between stage body 24 and pedestal 21.
By changing position and rotational handle 23 of the adjustment portion 2 on guide rail, adjust between stage body 24 and pedestal 21
Distance can easily meet the measurement demand under different measurement distances.
Diaphragm component 3 is placed on stage body 24, including shield 31 and diaphragm 32.
There is spliced eye 33 on shield, the outer edge size and spliced eye 33 of diaphragm 32 match, and diaphragm 32 is inserted into grafting
In hole 33.In specific example, diaphragm 32 can be hollow cylinder etc..
Diaphragm component 3 can absorb X ray, and limitation scattered ray injects ionisation chamber, so as to reduce the influence of scattering radiation.
In specific example, diaphragm component 3 can be made of lead material.
In a preferred embodiment, the thickness of diaphragm 32 is enough so that diaphragm 32 absorbs primary scattering ray enough.One
In a specific example, the thickness 30mm of diaphragm 32, the thickness of shield 31 is 25mm.
Half-value layer measuring device provided in this embodiment can also easily replace the diaphragm of different inner diameters, in ionisation chamber
When different or measuring condition changes, it can both ensure that radiation field is sufficiently large, by changing the internal diameter of diaphragm 32 to meet different electricity
Measurement demand from room, but limitation scattered ray as far as possible injects ionisation chamber, and the influence for scattering radiation is minimized, and improves and surveys
The accuracy of amount.
In a specific example, the diaphragm there are two different inner diameters is available, is internal diameter 30mm respectively, thickness
The diaphragm 32 of 30mm and internal diameter 50mm, thickness 30mm when in use, can select the diaphragm 32 of suitable inner diameter, be inserted into spliced eye
In 33, to meet ionisation chamber difference and the asynchronous measurement demand of measuring condition.
It absorbs plate rack 4 to be equally placed on stage body 24, for fixing absorbing sheet.Absorb the center of plate rack 4 and diaphragm group
The center of part 3 aligns so that the center of absorbing sheet and the center of diaphragm 32 being fixed in absorption plate rack 4 align.
In preferred example, the bottom for absorbing plate rack 4 has magnet, will absorb plate rack 4 and is fixed on stage body 24.
Screw can also be had by absorbing plate rack 4, and screw can be multiple, such as 4, be fixed on absorbing sheet with screw
It absorbs on stent 4, wherein the thickness of absorbing sheet can be different.
When using half-value layer measuring device, the suitable position that is first positioned over support portion 1 on table top, by adjustment portion 2
On sliding block, adjustment portion 2 is made to move along the rail to required position.According to ionisation chamber and measuring condition, it is suitable to choose
The diaphragm 32 of size, diaphragm 32 is inserted into spliced eye 33, and diaphragm component 3 is placed on stage body 24, regulates diaphragm component 3
Center, then plate rack 4 will be absorbed and place the front of diaphragm component 3 in Fig. 1, and absorb center and the diaphragm of plate rack 4
The center of component 3 overlaps.Later, regulation handle 23 is rotated, changes the distance between stage body 24 and pedestal 21 of adjustment portion 2, from
And adjust and absorb plate rack 4 and the distance between diaphragm component 3 and table top, it is made to meet measurement demand.It, can in measurement process
By changing position and rotational handle 23 of the adjustment portion 2 on guide rail, to adjust the distance between stage body 24 and pedestal 21,
Meet the measurement demand under different distance.
A kind of half-value layer measuring device that the utility model embodiment provides, by addition diaphragm component, by measurement process
In scattering radiation influence reduce as far as possible, realize the accurate measurement of half-value layer, and can easily replace internal diameter size
Different diaphragm, to meet the measurement demand under different ionisation chambers and different measuring conditions.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of half-value layer measuring device, which is characterized in that the half-value layer measuring device includes：
Support portion, top are equipped with guide rail, have sliding block on the guide rail；
Adjustment portion, including pedestal, telescopic rod, regulation handle and stage body；The bottom surface of the pedestal is installed on the sliding block so that
The adjustment portion is moved along the guide rail；The telescopic rod connects the upper surface of the pedestal and the lower surface of the stage body, institute
It states regulation handle to drive the telescopic rod compression or stretch, so as to adjust distance between the stage body and the pedestal；
Diaphragm component is placed on the stage body, including shield and diaphragm；Wherein, there are spliced eye, the light on the shield
The outer edge size and the spliced eye of door screen match, and the diaphragm is inserted into the spliced eye；
Plate rack is absorbed, is placed on the stage body, absorbing sheet is fixed by the absorption plate rack so that the absorbing sheet and institute
The center for stating diaphragm aligns.
2. half-value layer measuring device according to claim 1, which is characterized in that the diaphragm component is made of lead material.
3. half-value layer measuring device according to claim 1, which is characterized in that the internal diameter of the diaphragm be 30mm, thickness
For 30mm.
4. half-value layer measuring device according to claim 1, which is characterized in that the internal diameter of the diaphragm be 50mm, thickness
For 30mm.
5. half-value layer measuring device according to claim 1, which is characterized in that the thickness of the shield is 25mm.
6. half-value layer measuring device according to claim 1, which is characterized in that the half-value layer measuring device further includes solid
Determine lower margin, be threadedly coupled with the support portion, the support portion is fixed on the table top for placing the half-value layer measuring device.
7. half-value layer measuring device according to claim 6, which is characterized in that screw in institute by adjusting the fixed lower margin
The depth of support portion is stated, changes the relative altitude between the support portion and the table top.
8. half-value layer measuring device according to claim 1, which is characterized in that the bottom for absorbing plate rack has magnetic
The absorption plate rack is fixed on the stage body by iron.
9. half-value layer measuring device according to claim 1, which is characterized in that the absorption plate rack has screw；Institute
Absorbing sheet is stated to be fixed on the absorption plate rack by the screw.
10. half-value layer measuring device according to claim 1, which is characterized in that the guide rail be two or more pieces, two
Or a plurality of guide rail is mutually parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721717632.5U CN207600978U (en) | 2017-12-12 | 2017-12-12 | Half-value layer measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721717632.5U CN207600978U (en) | 2017-12-12 | 2017-12-12 | Half-value layer measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207600978U true CN207600978U (en) | 2018-07-10 |
Family
ID=62763972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721717632.5U Expired - Fee Related CN207600978U (en) | 2017-12-12 | 2017-12-12 | Half-value layer measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207600978U (en) |
-
2017
- 2017-12-12 CN CN201721717632.5U patent/CN207600978U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206786265U (en) | Laser pastes the hanging device for positioning and supporting of mural circle | |
| CN103499672B (en) | Method and device for optionally adjusting radon exhalation rate and effective decay constants | |
| CN104090289B (en) | X-ray system | |
| CN104101892A (en) | X-ray and guide rail parallel system | |
| CN209460293U (en) | A kind of practicability pcb board test fixture | |
| CN104624451B (en) | Frock and system are irradiated in UV adhesive curings | |
| CN207600978U (en) | Half-value layer measuring device | |
| CN106053348A (en) | Hiding-type adjustable film detection mechanism | |
| CN106061155B (en) | Mobile optical detection apparatus platform cabinet with damping and Level tune function | |
| CN106290417A (en) | A kind of multi-pass, across yardstick, high-resolution Micro-CT scanning detector | |
| CN107941464A (en) | A kind of head-up display visual field testboard | |
| CN104091748B (en) | Ionization chamber adjusting means | |
| CN105892220B (en) | The test equipment and its application of wide-angle lens mould group | |
| CN207352180U (en) | A kind of compact beam spot detector module | |
| CN205678385U (en) | A kind of adjustable sonic source device for architectural acoustics inspection | |
| CN104690699B (en) | Multi-dimensional displacement platform | |
| CN108196292B (en) | A kind of measuring device | |
| CN207503511U (en) | A kind of focal length of lens measurement physics teaching aid | |
| CN206932457U (en) | Accelerator position adjustment mechanism and betatron cask flask | |
| CN204014242U (en) | X ray adjusting device | |
| CN206684030U (en) | AOI vision-based detection mesopores backlight matches somebody with somebody backlight testing agency | |
| CN209310719U (en) | Building decoration detection device | |
| CN205982138U (en) | Multi -pass, stride yardstick, micro - CT detector of high resolution | |
| CN207441199U (en) | The soft screen TP gauges of OLED | |
| CN209080845U (en) | A kind of Anti-dislocation handling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20201212 |